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Finding the Third Proportional to 3,420 and 4,401

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Solution

The third proportional to 3,420 and 4,401 is: 5,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420 : 4,401 = 4,401 : x
  2. Step 2: Convert to fraction form
    3,420/4,401 = 4,401/x
  3. Step 3: Cross multiply
    3,420x = 4,401 × 4,401
  4. Step 4: Simplify right side
    3,420x = 19,368,801
  5. Step 5: Solve for x
    x = 19,368,801/3,420
  6. Step 6: Final answer
    x = 5,663.39

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.